In the accompanying interview, apart from talking The Tudors and Game of Thrones, Natalie also touches upon Cressida:
Cressida, however, marks an entirely new direction. As Dormer points out proudly, “She’s a woman who’s not defined by any romance; she’s defined by her job. That’s her raison d’être.” Shaving off half of her hair to play the role of the ambitious filmmaker who first follows Katniss Everdeen (Jennifer Lawrence) out of professional interest, then transforms into a believer, was an especially nervy stunt. “There were one too many polar vortexes in New York for this kind of haircut, but I enjoyed doing it. That’s a fun part of this job. You get taken out of your comfort zone physically, geographically, whatever.” She also had her head inked regularly and waded through “neck-deep waters with semi-automatic rifles,” though audiences won’t see these soggy battles until Mockingjay – Part 2.
Read more from the interview here.